TLDR; Beams (and everything else) finally hits the Terrain Surface properly! What this also means is the building code finally works again, because you can select a spot you want to build a building on the surface!
While the code to touch the surface immediately beneath something has existed for a while, tracking across a surface is QUITE different because of how mountains and other surface details work, and how much more complicated it is to do that.
Original post blogged on Rank: Warmaster Dev Blog.
